Tuesday, 27 June 2006

My older brothers made me this way

Canadian researchers have found that the most consistent biological impact on a guy's sexuality is whether or not he has older brothers.

According to their research, a mother's immune system reacts to male fetuses by creating "maternal anti-male antibodies" that affect the part of the brain that determines sexuality. The more male fetuses carried, the stronger this response will become.

What I would like to know is whether and how this relates to sexual preferences in females.

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